Like carcass on the road there should be a possibility to drivers to make notes of places where frog migration routes go over roads. That alert should be active at least a day, better yet a week as the spring migration lasts a month (in Estonia). And when planning a route Waze could say, that there is a frog migration on that one and suggest a different one with less frogs. Keeping in mind that people can still choose the one with frogs, but there is a possibility to be better. And also a suggestion to lower the speed limit. With slower speed there is also a higher chance for the frogs to survive.